Quest Diagnostics is a major diagnostic testing company, offering lab and direct-to-consumer tests that touch one in three U.S. adults every year and half the nation’s hospitals and doctors. Since its 1967 founding, the company has grown to have a presence in 130 countries. It works with hospitals, doctors, patients, insurers, government agencies, employers, and pharmaceutical companies, with more than 2,250 locations in the U.S. Quest operates under the Quest Diagnostics brand, as well as under the AmeriPath, Dermpath Diagnostics, ExamOne, and Quanum brands.
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